基于仿生原理的小型非开挖钻孔泥屑输送技术

大多数非开挖施工都存在占地面积大、运行成本高、环境污染严重等问题,特别是小尺寸( 600 mm以下)非开挖钻孔施工排泥问题对环境影响较大。笔者基于仿生学原理,通过对穿山甲开挖孔洞原理与泥屑输送方法的研究,研究设计了一种适合城市拥挤道路非开挖施工小型钻孔机器人系统。重点对非开挖钻孔系统关键泥屑气力输送技术进行研究,构建了泥屑输送动力学模型;并运用构建的理论方法,进行了举例计算。为小型非开挖钻孔机器人的实际应用奠定了理论基础。     

Development and applications of trenchless technology in China

Trenchless technology has developed for almost 10 years in China since the first symposium on trenchless technology was held in Beijing (Peking) in 1996 and the China Society for Trenchless Technology-CSTT was established in 1998. Driven by the dramatically increased demand for underground pipeline installation throughout the nation, China has made significant progress in research and development in trenchless technology in the past 10 years. For example, there are more than 200 contractors engaged in trenchless construction, using more than 2000 horizontal directional drilling machines, among which approximately 700 have been introduced in the last year, and the biggest HDD rig in the world is now in China. In addition, China has made many achievements in education, research, and new products development and has accomplished many challenging projects in terms of complexity, diameter and distance in this field. There is a huge market potential for trenchless technology in mainland China.This paper presents the latest research, education, training, marketing and technical status of trenchless technology in China, and discusses the potential market, trends and factors that will influence trenchless technology in the next decade in China.     

Trenchless construction: An emerging technology in United Arab Emirates

The development of trenchless methods has gained impetus in the construction industry in United Arab Emirates due to increasing amounts of investment in underground infrastructures that are new, deteriorating, or under capacity. This paper presents the results of a questionnaire survey of trenchless construction methods used by municipalities and contractors in United Arab Emirates. The survey provides an indication of current and expected future trends in the application of trenchless construction technologies including types of technologies employed and percentage of projects that employed trenchless technologies. The survey results indicate that trenchless technology is gaining increasing popularity among contractors and municipalities across United Arab Emirates. The survey results also indicate that trenchless technology is gaining increasing popularity among municipal engineers across UAE. The survey revealed current, and by extrapolation likely future growth, in utilizing trenchless construction methods and the average expenditures of municipalities in UAE for new construction and for rehabilitation.     

基于城市给排水管道非开挖施工技术的探讨

介绍了非开挖施工技术的含义及应用范围,归纳了非开挖施工方法的主要方法及设备,探讨了非开挖技术的特点,对杭州市非开挖施工技术的应用进行了分析,得出了非开挖技术应用前景极为广阔的结论。     

非开挖技术在城市基础设施建设中的应用

对非开挖技术的应用现状进行了较为系统的阐述,分析了非开挖技术方法及其优缺点,针对非开挖技术在应用过程中存在的问题提出了进一步需解决的问题,以更好地发挥非开挖技术在现代城市基础设施建设中的作用。     

非开挖钻杆的有限元分析

对非开挖钻杆进行了受力分析，在对钻杆进行弯曲分析的基础上建立了钻杆的压扭模型，并利用ANSYS软件对钻杆进行了屈曲分析得出钻杆的变形图、各节点应力图表、应力云图等结果。     

A survey of sewer rehabilitation in Malaysia: application of trenchless technologies

This work presents a review of applicable sewer rehabilitation options using trenchless technology in Malaysia. The typical problems faced in wastewater collection systems are analysed and factors that determine the selection method are outlined. This study also highlights the necessary steps to be taken prior to the rehabilitation work. The trenchless technology reviewed here comprises repair, renovation and replacement options. The cost-effectiveness of different rehabilitation methods was identified to assess the economic viability of various options in the Malaysian context. This study reveals that not all the trenchless technologies available in the market are suitable for use in Malaysia, mainly due to incompatibility of the rehabilitation materials used. Furthermore, as trenchless rehabilitation generally involves higher capital outlay than open-cut methods, the choice of rehabilitation method has to be made on a case-to-case basis.     

Trenchless Technology

This paper outlines some of the technical developments which have given rise to the rapid advance in trenchless construction. The paper then discusses some of the other factors - political, administrative, and legal - which affect the adoption of the new technology.     

非开挖技术在沙河涌整治工程中的应用

介绍了定向钻和顶管两种非开挖技术在广州市沙河涌整治工程分洪道中的应用情况,对其成功的经验与失败的教训进行了分析,为工程施工、设计提供了参考.     

导向仪在市政道路非开挖管线探测中的应用

随着城镇化进程的不断加快,市政基础设施建设高速发展,地下管线敷设方法不断更新,非开挖管线施工技术被广泛应用到市政管线敷设工程中,埋深大,材质多为非金属,给常规地下管线探测[9]工作带来了困惑和挑战。本文利用导向仪探测非开挖敷设管线,并辅以管线探测仪探测对探测结果进行比对,利用开挖验证数据进行检核,分析出导向仪在探测市政道路非开挖管线中有很好的应用效果。     

The Trenchless Revolution

T he primitive 'age' of trenching has been with us for a long time, but it is now being overtaken by the 'New Age' of trenchless technology. If the benefits of the 'New Age' are to be fully realized, there must be proper co-ordination of utilities' pipes and cables under urban streets.     

起升机构动态仿真系统输入激励的构造及研究

就起重机常见的绕线式异步电动机驱动起升机构的机械特性构造S-函数。利用构造的S-函数作为输入激励,结合-质量-自由度简单振动模型,对起升机构的动态特性进行仿真,获得了不同输入激励时系统的位移、动载系数响应的结果并作了对比分析。     

我国非开挖管线工程技术发展现状的调查报告

在对我国非开挖管线工程技术发展历程、现状调查的基础上,本文指出目前我国非开挖技术产业的雏形已初步形成,非开挖管线工程市场已从潜在市场开始向现实市场转变,具有很好的市场前景.但和国外相比,差距仍很大,且存在诸多不利于该技术产业化进程的问题有待解决.     

利用衬管修复地下管道的计算方法

概述了对地下管道进行非开挖修复后管道衬管在外力作用下压曲变形的形式和过程，分析了衬管压曲变形的特点，介绍了衬管设计的方法及应用，为利用衬管修复地下管道提供了理论依据。     

Quality assurance and quality control practices for rehabilitation of sewer and water mains

As part of the US Environmental Protection Agency (EPA)'s Aging Water Infrastructure Research Program, several areas of research are being pursued including a review of quality assurance and quality control (QA/QC) practices and acceptance testing during the installation of rehabilitation systems (USEPA 2011). The objectives of this research effort were to collect, analyze and summarize information on the installation and QA/QC practices for the trenchless rehabilitation of sewer and water transmission mains. In addition, consideration was given to practices related to water service lines, sewer service laterals, force mains, siphons, sewer manholes, pumping stations, associated wet wells and other appurtenances. This review was accomplished primarily by conducting interviews directly with rehabilitation technology vendors, design engineers and water and wastewater utilities that have a track record of using trenchless rehabilitation technologies within their network. This paper provides an overview of how QA/QC issues have been handled in North America for trenchless rehabilitation technologies.     

我国非开挖施工技术的发展概况及差距

介绍了非开挖技术的优点,发展阶段,非开挖技术在我国的发展概况,以及与发达国家或地区相比,我国在非开挖技术方面的差距。     

非开挖顶管工艺在市政排水管线中的应用

随着城市交通建设的发展和市政排水工程项目的建设完善,城市地下管线错综复杂,排水管线的非开挖顶管施工工艺得到广泛应用。尤其在大城市以及市政排水管线的建设过程中,道路的开挖具有一定的限制,因此采用土压平衡式顶管机顶管施工方法,为相应的工程项目的开展奠定了基础。     

合肥市地下管线非开挖技术应用规划探讨

文章通过对目前非开挖技术规划、管理方面所暴露出的一些问题进行分析,提出了建立非开挖管理、评价系统的思想。经过分析制定了一系列的评价指标并提出了相关建议。     

管道非开挖修复技术的分类和设计

非开挖修复技术在地下管道的维护管理工作以及城市的排堵保畅工作中得到了越来越多的应用。为此系统介绍了地下管道非开挖技术的分类、修复后管道的结构分类以及CIPP内衬制管的构造设计和性能指标。     

浅议非开挖技术

为了解决市政设施与环境矛盾，提出了非开挖技术，阐述了非开挖技术的概念及其产生的必要性，介绍了盾构技术、顶管技术和管幕技术这三种非开挖技术的施工原理、性能特点以及施工工艺，并对该技术在我国的发展前景进行了展望。